--- csl/fox/configure.ac.orig	2018-06-17 19:20:00 UTC
+++ csl/fox/configure.ac
@@ -166,7 +166,7 @@ if test "x$enable_release" = "xyes" && test "x$enable_
       CXXFLAGS="${CXXFLAGS} -Wuninitialized -ffast-math -fstrict-aliasing"
       ;;
   *)
-      CXXFLAGS="${CXXFLAGS} -Wuninitialized -fomit-frame-pointer -ffast-math -fstrict-aliasing -finline-functions -fexpensive-optimizations"
+      CXXFLAGS="${CXXFLAGS} -Wuninitialized -fomit-frame-pointer -ffast-math -fstrict-aliasing -finline-functions"
       LDFLAGS="-s ${LDFLAGS}"
       ;;
     esac